If there’s anyone you can trust to keep your copy of Windows up and running, it should be Microsoft, right? That’s true… until it isn’t. Some recent updates are causing severe stability issues for Windows 11, and the latest one might just make your solid-state drive (SSD) or hard drive (HDD) unreadable, though thankfully it seems to be an isolated issue.

According to Japanese user Necoru_cat on Twitter/X , the Microsoft Defender update issued last week for Windows 11 and Windows 10 introduced a new bug that’s causing some storage drives to be inaccessible. That includes drives that are hosting Windows itself, effectively borking the entire PC. Neowin reports that it’s an issue specifically for the latest 24H2 versions of Windows 11 (KB5063878, KB5063875) and Windows 10 (KB5063709, KB506

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